| /* |
| * RocketPort device driver for Linux |
| * |
| * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000. |
| * |
| * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of the |
| * License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| /* |
| * Kernel Synchronization: |
| * |
| * This driver has 2 kernel control paths - exception handlers (calls into the driver |
| * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts |
| * are not used. |
| * |
| * Critical data: |
| * - rp_table[], accessed through passed "info" pointers, is a global (static) array of |
| * serial port state information and the xmit_buf circular buffer. Protected by |
| * a per port spinlock. |
| * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there |
| * is data to be transmitted. Protected by atomic bit operations. |
| * - rp_num_ports, int indicating number of open ports, protected by atomic operations. |
| * |
| * rp_write() and rp_write_char() functions use a per port semaphore to protect against |
| * simultaneous access to the same port by more than one process. |
| */ |
| |
| /****** Defines ******/ |
| #ifdef PCI_NUM_RESOURCES |
| #define PCI_BASE_ADDRESS(dev, r) ((dev)->resource[r].start) |
| #else |
| #define PCI_BASE_ADDRESS(dev, r) ((dev)->base_address[r]) |
| #endif |
| |
| #define ROCKET_PARANOIA_CHECK |
| #define ROCKET_DISABLE_SIMUSAGE |
| |
| #undef ROCKET_SOFT_FLOW |
| #undef ROCKET_DEBUG_OPEN |
| #undef ROCKET_DEBUG_INTR |
| #undef ROCKET_DEBUG_WRITE |
| #undef ROCKET_DEBUG_FLOW |
| #undef ROCKET_DEBUG_THROTTLE |
| #undef ROCKET_DEBUG_WAIT_UNTIL_SENT |
| #undef ROCKET_DEBUG_RECEIVE |
| #undef ROCKET_DEBUG_HANGUP |
| #undef REV_PCI_ORDER |
| #undef ROCKET_DEBUG_IO |
| |
| #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */ |
| |
| /****** Kernel includes ******/ |
| |
| #ifdef MODVERSIONS |
| #include <config/modversions.h> |
| #endif |
| |
| #include <linux/module.h> |
| #include <linux/errno.h> |
| #include <linux/major.h> |
| #include <linux/kernel.h> |
| #include <linux/signal.h> |
| #include <linux/slab.h> |
| #include <linux/mm.h> |
| #include <linux/sched.h> |
| #include <linux/timer.h> |
| #include <linux/interrupt.h> |
| #include <linux/tty.h> |
| #include <linux/tty_driver.h> |
| #include <linux/tty_flip.h> |
| #include <linux/string.h> |
| #include <linux/fcntl.h> |
| #include <linux/ptrace.h> |
| #include <linux/ioport.h> |
| #include <linux/delay.h> |
| #include <linux/wait.h> |
| #include <linux/pci.h> |
| #include <asm/uaccess.h> |
| #include <asm/atomic.h> |
| #include <linux/bitops.h> |
| #include <linux/spinlock.h> |
| #include <asm/semaphore.h> |
| #include <linux/init.h> |
| |
| /****** RocketPort includes ******/ |
| |
| #include "rocket_int.h" |
| #include "rocket.h" |
| |
| #define ROCKET_VERSION "2.09" |
| #define ROCKET_DATE "12-June-2003" |
| |
| /****** RocketPort Local Variables ******/ |
| |
| static struct tty_driver *rocket_driver; |
| |
| static struct rocket_version driver_version = { |
| ROCKET_VERSION, ROCKET_DATE |
| }; |
| |
| static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */ |
| static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */ |
| /* eg. Bit 0 indicates port 0 has xmit data, ... */ |
| static atomic_t rp_num_ports_open; /* Number of serial ports open */ |
| static struct timer_list rocket_timer; |
| |
| static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */ |
| static unsigned long board2; |
| static unsigned long board3; |
| static unsigned long board4; |
| static unsigned long controller; |
| static int support_low_speed; |
| static unsigned long modem1; |
| static unsigned long modem2; |
| static unsigned long modem3; |
| static unsigned long modem4; |
| static unsigned long pc104_1[8]; |
| static unsigned long pc104_2[8]; |
| static unsigned long pc104_3[8]; |
| static unsigned long pc104_4[8]; |
| static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 }; |
| |
| static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */ |
| static unsigned long rcktpt_io_addr[NUM_BOARDS]; |
| static int rcktpt_type[NUM_BOARDS]; |
| static int is_PCI[NUM_BOARDS]; |
| static rocketModel_t rocketModel[NUM_BOARDS]; |
| static int max_board; |
| |
| /* |
| * The following arrays define the interrupt bits corresponding to each AIOP. |
| * These bits are different between the ISA and regular PCI boards and the |
| * Universal PCI boards. |
| */ |
| |
| static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = { |
| AIOP_INTR_BIT_0, |
| AIOP_INTR_BIT_1, |
| AIOP_INTR_BIT_2, |
| AIOP_INTR_BIT_3 |
| }; |
| |
| static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = { |
| UPCI_AIOP_INTR_BIT_0, |
| UPCI_AIOP_INTR_BIT_1, |
| UPCI_AIOP_INTR_BIT_2, |
| UPCI_AIOP_INTR_BIT_3 |
| }; |
| |
| static Byte_t RData[RDATASIZE] = { |
| 0x00, 0x09, 0xf6, 0x82, |
| 0x02, 0x09, 0x86, 0xfb, |
| 0x04, 0x09, 0x00, 0x0a, |
| 0x06, 0x09, 0x01, 0x0a, |
| 0x08, 0x09, 0x8a, 0x13, |
| 0x0a, 0x09, 0xc5, 0x11, |
| 0x0c, 0x09, 0x86, 0x85, |
| 0x0e, 0x09, 0x20, 0x0a, |
| 0x10, 0x09, 0x21, 0x0a, |
| 0x12, 0x09, 0x41, 0xff, |
| 0x14, 0x09, 0x82, 0x00, |
| 0x16, 0x09, 0x82, 0x7b, |
| 0x18, 0x09, 0x8a, 0x7d, |
| 0x1a, 0x09, 0x88, 0x81, |
| 0x1c, 0x09, 0x86, 0x7a, |
| 0x1e, 0x09, 0x84, 0x81, |
| 0x20, 0x09, 0x82, 0x7c, |
| 0x22, 0x09, 0x0a, 0x0a |
| }; |
| |
| static Byte_t RRegData[RREGDATASIZE] = { |
| 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */ |
| 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */ |
| 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */ |
| 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */ |
| 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */ |
| 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */ |
| 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */ |
| 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */ |
| 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */ |
| 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */ |
| 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */ |
| 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */ |
| 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */ |
| }; |
| |
| static CONTROLLER_T sController[CTL_SIZE] = { |
| {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, |
| {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, |
| {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, |
| {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, |
| {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}} |
| }; |
| |
| static Byte_t sBitMapClrTbl[8] = { |
| 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f |
| }; |
| |
| static Byte_t sBitMapSetTbl[8] = { |
| 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 |
| }; |
| |
| static int sClockPrescale = 0x14; |
| |
| /* |
| * Line number is the ttySIx number (x), the Minor number. We |
| * assign them sequentially, starting at zero. The following |
| * array keeps track of the line number assigned to a given board/aiop/channel. |
| */ |
| static unsigned char lineNumbers[MAX_RP_PORTS]; |
| static unsigned long nextLineNumber; |
| |
| /***** RocketPort Static Prototypes *********/ |
| static int __init init_ISA(int i); |
| static void rp_wait_until_sent(struct tty_struct *tty, int timeout); |
| static void rp_flush_buffer(struct tty_struct *tty); |
| static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model); |
| static unsigned char GetLineNumber(int ctrl, int aiop, int ch); |
| static unsigned char SetLineNumber(int ctrl, int aiop, int ch); |
| static void rp_start(struct tty_struct *tty); |
| static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, |
| int ChanNum); |
| static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode); |
| static void sFlushRxFIFO(CHANNEL_T * ChP); |
| static void sFlushTxFIFO(CHANNEL_T * ChP); |
| static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags); |
| static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags); |
| static void sModemReset(CONTROLLER_T * CtlP, int chan, int on); |
| static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on); |
| static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data); |
| static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, |
| ByteIO_t * AiopIOList, int AiopIOListSize, |
| WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, |
| int PeriodicOnly, int altChanRingIndicator, |
| int UPCIRingInd); |
| static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, |
| ByteIO_t * AiopIOList, int AiopIOListSize, |
| int IRQNum, Byte_t Frequency, int PeriodicOnly); |
| static int sReadAiopID(ByteIO_t io); |
| static int sReadAiopNumChan(WordIO_t io); |
| |
| MODULE_AUTHOR("Theodore Ts'o"); |
| MODULE_DESCRIPTION("Comtrol RocketPort driver"); |
| module_param(board1, ulong, 0); |
| MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1"); |
| module_param(board2, ulong, 0); |
| MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2"); |
| module_param(board3, ulong, 0); |
| MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3"); |
| module_param(board4, ulong, 0); |
| MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4"); |
| module_param(controller, ulong, 0); |
| MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller"); |
| module_param(support_low_speed, bool, 0); |
| MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud"); |
| module_param(modem1, ulong, 0); |
| MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem"); |
| module_param(modem2, ulong, 0); |
| MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem"); |
| module_param(modem3, ulong, 0); |
| MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem"); |
| module_param(modem4, ulong, 0); |
| MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem"); |
| module_param_array(pc104_1, ulong, NULL, 0); |
| MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,..."); |
| module_param_array(pc104_2, ulong, NULL, 0); |
| MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,..."); |
| module_param_array(pc104_3, ulong, NULL, 0); |
| MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,..."); |
| module_param_array(pc104_4, ulong, NULL, 0); |
| MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,..."); |
| |
| static int rp_init(void); |
| static void rp_cleanup_module(void); |
| |
| module_init(rp_init); |
| module_exit(rp_cleanup_module); |
| |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| |
| /*************************************************************************/ |
| /* Module code starts here */ |
| |
| static inline int rocket_paranoia_check(struct r_port *info, |
| const char *routine) |
| { |
| #ifdef ROCKET_PARANOIA_CHECK |
| if (!info) |
| return 1; |
| if (info->magic != RPORT_MAGIC) { |
| printk(KERN_INFO "Warning: bad magic number for rocketport struct in %s\n", |
| routine); |
| return 1; |
| } |
| #endif |
| return 0; |
| } |
| |
| |
| /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals |
| * that receive data is present on a serial port. Pulls data from FIFO, moves it into the |
| * tty layer. |
| */ |
| static void rp_do_receive(struct r_port *info, |
| struct tty_struct *tty, |
| CHANNEL_t * cp, unsigned int ChanStatus) |
| { |
| unsigned int CharNStat; |
| int ToRecv, wRecv, space = 0, count; |
| unsigned char *cbuf, *chead; |
| char *fbuf, *fhead; |
| struct tty_ldisc *ld; |
| |
| ld = tty_ldisc_ref(tty); |
| |
| ToRecv = sGetRxCnt(cp); |
| space = tty->receive_room; |
| if (space > 2 * TTY_FLIPBUF_SIZE) |
| space = 2 * TTY_FLIPBUF_SIZE; |
| count = 0; |
| #ifdef ROCKET_DEBUG_INTR |
| printk(KERN_INFO "rp_do_receive(%d, %d)...", ToRecv, space); |
| #endif |
| |
| /* |
| * determine how many we can actually read in. If we can't |
| * read any in then we have a software overrun condition. |
| */ |
| if (ToRecv > space) |
| ToRecv = space; |
| |
| ToRecv = tty_prepare_flip_string_flags(tty, &chead, &fhead, ToRecv); |
| if (ToRecv <= 0) |
| goto done; |
| |
| cbuf = chead; |
| fbuf = fhead; |
| |
| /* |
| * if status indicates there are errored characters in the |
| * FIFO, then enter status mode (a word in FIFO holds |
| * character and status). |
| */ |
| if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) { |
| if (!(ChanStatus & STATMODE)) { |
| #ifdef ROCKET_DEBUG_RECEIVE |
| printk(KERN_INFO "Entering STATMODE..."); |
| #endif |
| ChanStatus |= STATMODE; |
| sEnRxStatusMode(cp); |
| } |
| } |
| |
| /* |
| * if we previously entered status mode, then read down the |
| * FIFO one word at a time, pulling apart the character and |
| * the status. Update error counters depending on status |
| */ |
| if (ChanStatus & STATMODE) { |
| #ifdef ROCKET_DEBUG_RECEIVE |
| printk(KERN_INFO "Ignore %x, read %x...", info->ignore_status_mask, |
| info->read_status_mask); |
| #endif |
| while (ToRecv) { |
| CharNStat = sInW(sGetTxRxDataIO(cp)); |
| #ifdef ROCKET_DEBUG_RECEIVE |
| printk(KERN_INFO "%x...", CharNStat); |
| #endif |
| if (CharNStat & STMBREAKH) |
| CharNStat &= ~(STMFRAMEH | STMPARITYH); |
| if (CharNStat & info->ignore_status_mask) { |
| ToRecv--; |
| continue; |
| } |
| CharNStat &= info->read_status_mask; |
| if (CharNStat & STMBREAKH) |
| *fbuf++ = TTY_BREAK; |
| else if (CharNStat & STMPARITYH) |
| *fbuf++ = TTY_PARITY; |
| else if (CharNStat & STMFRAMEH) |
| *fbuf++ = TTY_FRAME; |
| else if (CharNStat & STMRCVROVRH) |
| *fbuf++ = TTY_OVERRUN; |
| else |
| *fbuf++ = TTY_NORMAL; |
| *cbuf++ = CharNStat & 0xff; |
| count++; |
| ToRecv--; |
| } |
| |
| /* |
| * after we've emptied the FIFO in status mode, turn |
| * status mode back off |
| */ |
| if (sGetRxCnt(cp) == 0) { |
| #ifdef ROCKET_DEBUG_RECEIVE |
| printk(KERN_INFO "Status mode off.\n"); |
| #endif |
| sDisRxStatusMode(cp); |
| } |
| } else { |
| /* |
| * we aren't in status mode, so read down the FIFO two |
| * characters at time by doing repeated word IO |
| * transfer. |
| */ |
| wRecv = ToRecv >> 1; |
| if (wRecv) |
| sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv); |
| if (ToRecv & 1) |
| cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp)); |
| memset(fbuf, TTY_NORMAL, ToRecv); |
| cbuf += ToRecv; |
| fbuf += ToRecv; |
| count += ToRecv; |
| } |
| /* Push the data up to the tty layer */ |
| ld->receive_buf(tty, chead, fhead, count); |
| done: |
| tty_ldisc_deref(ld); |
| } |
| |
| /* |
| * Serial port transmit data function. Called from the timer polling loop as a |
| * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready |
| * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is |
| * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks. |
| */ |
| static void rp_do_transmit(struct r_port *info) |
| { |
| int c; |
| CHANNEL_t *cp = &info->channel; |
| struct tty_struct *tty; |
| unsigned long flags; |
| |
| #ifdef ROCKET_DEBUG_INTR |
| printk(KERN_INFO "rp_do_transmit "); |
| #endif |
| if (!info) |
| return; |
| if (!info->tty) { |
| printk(KERN_INFO "rp: WARNING rp_do_transmit called with info->tty==NULL\n"); |
| clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| return; |
| } |
| |
| spin_lock_irqsave(&info->slock, flags); |
| tty = info->tty; |
| info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); |
| |
| /* Loop sending data to FIFO until done or FIFO full */ |
| while (1) { |
| if (tty->stopped || tty->hw_stopped) |
| break; |
| c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail)); |
| if (c <= 0 || info->xmit_fifo_room <= 0) |
| break; |
| sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2); |
| if (c & 1) |
| sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]); |
| info->xmit_tail += c; |
| info->xmit_tail &= XMIT_BUF_SIZE - 1; |
| info->xmit_cnt -= c; |
| info->xmit_fifo_room -= c; |
| #ifdef ROCKET_DEBUG_INTR |
| printk(KERN_INFO "tx %d chars...", c); |
| #endif |
| } |
| |
| if (info->xmit_cnt == 0) |
| clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| |
| if (info->xmit_cnt < WAKEUP_CHARS) { |
| tty_wakeup(tty); |
| wake_up_interruptible(&tty->write_wait); |
| #ifdef ROCKETPORT_HAVE_POLL_WAIT |
| wake_up_interruptible(&tty->poll_wait); |
| #endif |
| } |
| |
| spin_unlock_irqrestore(&info->slock, flags); |
| |
| #ifdef ROCKET_DEBUG_INTR |
| printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head, |
| info->xmit_tail, info->xmit_fifo_room); |
| #endif |
| } |
| |
| /* |
| * Called when a serial port signals it has read data in it's RX FIFO. |
| * It checks what interrupts are pending and services them, including |
| * receiving serial data. |
| */ |
| static void rp_handle_port(struct r_port *info) |
| { |
| CHANNEL_t *cp; |
| struct tty_struct *tty; |
| unsigned int IntMask, ChanStatus; |
| |
| if (!info) |
| return; |
| |
| if ((info->flags & ROCKET_INITIALIZED) == 0) { |
| printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n"); |
| return; |
| } |
| if (!info->tty) { |
| printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n"); |
| return; |
| } |
| cp = &info->channel; |
| tty = info->tty; |
| |
| IntMask = sGetChanIntID(cp) & info->intmask; |
| #ifdef ROCKET_DEBUG_INTR |
| printk(KERN_INFO "rp_interrupt %02x...", IntMask); |
| #endif |
| ChanStatus = sGetChanStatus(cp); |
| if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */ |
| rp_do_receive(info, tty, cp, ChanStatus); |
| } |
| if (IntMask & DELTA_CD) { /* CD change */ |
| #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP)) |
| printk(KERN_INFO "ttyR%d CD now %s...", info->line, |
| (ChanStatus & CD_ACT) ? "on" : "off"); |
| #endif |
| if (!(ChanStatus & CD_ACT) && info->cd_status) { |
| #ifdef ROCKET_DEBUG_HANGUP |
| printk(KERN_INFO "CD drop, calling hangup.\n"); |
| #endif |
| tty_hangup(tty); |
| } |
| info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; |
| wake_up_interruptible(&info->open_wait); |
| } |
| #ifdef ROCKET_DEBUG_INTR |
| if (IntMask & DELTA_CTS) { /* CTS change */ |
| printk(KERN_INFO "CTS change...\n"); |
| } |
| if (IntMask & DELTA_DSR) { /* DSR change */ |
| printk(KERN_INFO "DSR change...\n"); |
| } |
| #endif |
| } |
| |
| /* |
| * The top level polling routine. Repeats every 1/100 HZ (10ms). |
| */ |
| static void rp_do_poll(unsigned long dummy) |
| { |
| CONTROLLER_t *ctlp; |
| int ctrl, aiop, ch, line, i; |
| unsigned int xmitmask; |
| unsigned int CtlMask; |
| unsigned char AiopMask; |
| Word_t bit; |
| |
| /* Walk through all the boards (ctrl's) */ |
| for (ctrl = 0; ctrl < max_board; ctrl++) { |
| if (rcktpt_io_addr[ctrl] <= 0) |
| continue; |
| |
| /* Get a ptr to the board's control struct */ |
| ctlp = sCtlNumToCtlPtr(ctrl); |
| |
| /* Get the interupt status from the board */ |
| #ifdef CONFIG_PCI |
| if (ctlp->BusType == isPCI) |
| CtlMask = sPCIGetControllerIntStatus(ctlp); |
| else |
| #endif |
| CtlMask = sGetControllerIntStatus(ctlp); |
| |
| /* Check if any AIOP read bits are set */ |
| for (aiop = 0; CtlMask; aiop++) { |
| bit = ctlp->AiopIntrBits[aiop]; |
| if (CtlMask & bit) { |
| CtlMask &= ~bit; |
| AiopMask = sGetAiopIntStatus(ctlp, aiop); |
| |
| /* Check if any port read bits are set */ |
| for (ch = 0; AiopMask; AiopMask >>= 1, ch++) { |
| if (AiopMask & 1) { |
| |
| /* Get the line number (/dev/ttyRx number). */ |
| /* Read the data from the port. */ |
| line = GetLineNumber(ctrl, aiop, ch); |
| rp_handle_port(rp_table[line]); |
| } |
| } |
| } |
| } |
| |
| xmitmask = xmit_flags[ctrl]; |
| |
| /* |
| * xmit_flags contains bit-significant flags, indicating there is data |
| * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port |
| * 1, ... (32 total possible). The variable i has the aiop and ch |
| * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc). |
| */ |
| if (xmitmask) { |
| for (i = 0; i < rocketModel[ctrl].numPorts; i++) { |
| if (xmitmask & (1 << i)) { |
| aiop = (i & 0x18) >> 3; |
| ch = i & 0x07; |
| line = GetLineNumber(ctrl, aiop, ch); |
| rp_do_transmit(rp_table[line]); |
| } |
| } |
| } |
| } |
| |
| /* |
| * Reset the timer so we get called at the next clock tick (10ms). |
| */ |
| if (atomic_read(&rp_num_ports_open)) |
| mod_timer(&rocket_timer, jiffies + POLL_PERIOD); |
| } |
| |
| /* |
| * Initializes the r_port structure for a port, as well as enabling the port on |
| * the board. |
| * Inputs: board, aiop, chan numbers |
| */ |
| static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev) |
| { |
| unsigned rocketMode; |
| struct r_port *info; |
| int line; |
| CONTROLLER_T *ctlp; |
| |
| /* Get the next available line number */ |
| line = SetLineNumber(board, aiop, chan); |
| |
| ctlp = sCtlNumToCtlPtr(board); |
| |
| /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */ |
| info = kmalloc(sizeof (struct r_port), GFP_KERNEL); |
| if (!info) { |
| printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line); |
| return; |
| } |
| memset(info, 0, sizeof (struct r_port)); |
| |
| info->magic = RPORT_MAGIC; |
| info->line = line; |
| info->ctlp = ctlp; |
| info->board = board; |
| info->aiop = aiop; |
| info->chan = chan; |
| info->closing_wait = 3000; |
| info->close_delay = 50; |
| init_waitqueue_head(&info->open_wait); |
| init_waitqueue_head(&info->close_wait); |
| info->flags &= ~ROCKET_MODE_MASK; |
| switch (pc104[board][line]) { |
| case 422: |
| info->flags |= ROCKET_MODE_RS422; |
| break; |
| case 485: |
| info->flags |= ROCKET_MODE_RS485; |
| break; |
| case 232: |
| default: |
| info->flags |= ROCKET_MODE_RS232; |
| break; |
| } |
| |
| info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR; |
| if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) { |
| printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan); |
| kfree(info); |
| return; |
| } |
| |
| rocketMode = info->flags & ROCKET_MODE_MASK; |
| |
| if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485)) |
| sEnRTSToggle(&info->channel); |
| else |
| sDisRTSToggle(&info->channel); |
| |
| if (ctlp->boardType == ROCKET_TYPE_PC104) { |
| switch (rocketMode) { |
| case ROCKET_MODE_RS485: |
| sSetInterfaceMode(&info->channel, InterfaceModeRS485); |
| break; |
| case ROCKET_MODE_RS422: |
| sSetInterfaceMode(&info->channel, InterfaceModeRS422); |
| break; |
| case ROCKET_MODE_RS232: |
| default: |
| if (info->flags & ROCKET_RTS_TOGGLE) |
| sSetInterfaceMode(&info->channel, InterfaceModeRS232T); |
| else |
| sSetInterfaceMode(&info->channel, InterfaceModeRS232); |
| break; |
| } |
| } |
| spin_lock_init(&info->slock); |
| sema_init(&info->write_sem, 1); |
| rp_table[line] = info; |
| if (pci_dev) |
| tty_register_device(rocket_driver, line, &pci_dev->dev); |
| } |
| |
| /* |
| * Configures a rocketport port according to its termio settings. Called from |
| * user mode into the driver (exception handler). *info CD manipulation is spinlock protected. |
| */ |
| static void configure_r_port(struct r_port *info, |
| struct termios *old_termios) |
| { |
| unsigned cflag; |
| unsigned long flags; |
| unsigned rocketMode; |
| int bits, baud, divisor; |
| CHANNEL_t *cp; |
| |
| if (!info->tty || !info->tty->termios) |
| return; |
| cp = &info->channel; |
| cflag = info->tty->termios->c_cflag; |
| |
| /* Byte size and parity */ |
| if ((cflag & CSIZE) == CS8) { |
| sSetData8(cp); |
| bits = 10; |
| } else { |
| sSetData7(cp); |
| bits = 9; |
| } |
| if (cflag & CSTOPB) { |
| sSetStop2(cp); |
| bits++; |
| } else { |
| sSetStop1(cp); |
| } |
| |
| if (cflag & PARENB) { |
| sEnParity(cp); |
| bits++; |
| if (cflag & PARODD) { |
| sSetOddParity(cp); |
| } else { |
| sSetEvenParity(cp); |
| } |
| } else { |
| sDisParity(cp); |
| } |
| |
| /* baud rate */ |
| baud = tty_get_baud_rate(info->tty); |
| if (!baud) |
| baud = 9600; |
| divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1; |
| if ((divisor >= 8192 || divisor < 0) && old_termios) { |
| info->tty->termios->c_cflag &= ~CBAUD; |
| info->tty->termios->c_cflag |= |
| (old_termios->c_cflag & CBAUD); |
| baud = tty_get_baud_rate(info->tty); |
| if (!baud) |
| baud = 9600; |
| divisor = (rp_baud_base[info->board] / baud) - 1; |
| } |
| if (divisor >= 8192 || divisor < 0) { |
| baud = 9600; |
| divisor = (rp_baud_base[info->board] / baud) - 1; |
| } |
| info->cps = baud / bits; |
| sSetBaud(cp, divisor); |
| |
| if (cflag & CRTSCTS) { |
| info->intmask |= DELTA_CTS; |
| sEnCTSFlowCtl(cp); |
| } else { |
| info->intmask &= ~DELTA_CTS; |
| sDisCTSFlowCtl(cp); |
| } |
| if (cflag & CLOCAL) { |
| info->intmask &= ~DELTA_CD; |
| } else { |
| spin_lock_irqsave(&info->slock, flags); |
| if (sGetChanStatus(cp) & CD_ACT) |
| info->cd_status = 1; |
| else |
| info->cd_status = 0; |
| info->intmask |= DELTA_CD; |
| spin_unlock_irqrestore(&info->slock, flags); |
| } |
| |
| /* |
| * Handle software flow control in the board |
| */ |
| #ifdef ROCKET_SOFT_FLOW |
| if (I_IXON(info->tty)) { |
| sEnTxSoftFlowCtl(cp); |
| if (I_IXANY(info->tty)) { |
| sEnIXANY(cp); |
| } else { |
| sDisIXANY(cp); |
| } |
| sSetTxXONChar(cp, START_CHAR(info->tty)); |
| sSetTxXOFFChar(cp, STOP_CHAR(info->tty)); |
| } else { |
| sDisTxSoftFlowCtl(cp); |
| sDisIXANY(cp); |
| sClrTxXOFF(cp); |
| } |
| #endif |
| |
| /* |
| * Set up ignore/read mask words |
| */ |
| info->read_status_mask = STMRCVROVRH | 0xFF; |
| if (I_INPCK(info->tty)) |
| info->read_status_mask |= STMFRAMEH | STMPARITYH; |
| if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) |
| info->read_status_mask |= STMBREAKH; |
| |
| /* |
| * Characters to ignore |
| */ |
| info->ignore_status_mask = 0; |
| if (I_IGNPAR(info->tty)) |
| info->ignore_status_mask |= STMFRAMEH | STMPARITYH; |
| if (I_IGNBRK(info->tty)) { |
| info->ignore_status_mask |= STMBREAKH; |
| /* |
| * If we're ignoring parity and break indicators, |
| * ignore overruns too. (For real raw support). |
| */ |
| if (I_IGNPAR(info->tty)) |
| info->ignore_status_mask |= STMRCVROVRH; |
| } |
| |
| rocketMode = info->flags & ROCKET_MODE_MASK; |
| |
| if ((info->flags & ROCKET_RTS_TOGGLE) |
| || (rocketMode == ROCKET_MODE_RS485)) |
| sEnRTSToggle(cp); |
| else |
| sDisRTSToggle(cp); |
| |
| sSetRTS(&info->channel); |
| |
| if (cp->CtlP->boardType == ROCKET_TYPE_PC104) { |
| switch (rocketMode) { |
| case ROCKET_MODE_RS485: |
| sSetInterfaceMode(cp, InterfaceModeRS485); |
| break; |
| case ROCKET_MODE_RS422: |
| sSetInterfaceMode(cp, InterfaceModeRS422); |
| break; |
| case ROCKET_MODE_RS232: |
| default: |
| if (info->flags & ROCKET_RTS_TOGGLE) |
| sSetInterfaceMode(cp, InterfaceModeRS232T); |
| else |
| sSetInterfaceMode(cp, InterfaceModeRS232); |
| break; |
| } |
| } |
| } |
| |
| /* info->count is considered critical, protected by spinlocks. */ |
| static int block_til_ready(struct tty_struct *tty, struct file *filp, |
| struct r_port *info) |
| { |
| DECLARE_WAITQUEUE(wait, current); |
| int retval; |
| int do_clocal = 0, extra_count = 0; |
| unsigned long flags; |
| |
| /* |
| * If the device is in the middle of being closed, then block |
| * until it's done, and then try again. |
| */ |
| if (tty_hung_up_p(filp)) |
| return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); |
| if (info->flags & ROCKET_CLOSING) { |
| interruptible_sleep_on(&info->close_wait); |
| return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); |
| } |
| |
| /* |
| * If non-blocking mode is set, or the port is not enabled, |
| * then make the check up front and then exit. |
| */ |
| if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { |
| info->flags |= ROCKET_NORMAL_ACTIVE; |
| return 0; |
| } |
| if (tty->termios->c_cflag & CLOCAL) |
| do_clocal = 1; |
| |
| /* |
| * Block waiting for the carrier detect and the line to become free. While we are in |
| * this loop, info->count is dropped by one, so that rp_close() knows when to free things. |
| * We restore it upon exit, either normal or abnormal. |
| */ |
| retval = 0; |
| add_wait_queue(&info->open_wait, &wait); |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count); |
| #endif |
| spin_lock_irqsave(&info->slock, flags); |
| |
| #ifdef ROCKET_DISABLE_SIMUSAGE |
| info->flags |= ROCKET_NORMAL_ACTIVE; |
| #else |
| if (!tty_hung_up_p(filp)) { |
| extra_count = 1; |
| info->count--; |
| } |
| #endif |
| info->blocked_open++; |
| |
| spin_unlock_irqrestore(&info->slock, flags); |
| |
| while (1) { |
| if (tty->termios->c_cflag & CBAUD) { |
| sSetDTR(&info->channel); |
| sSetRTS(&info->channel); |
| } |
| set_current_state(TASK_INTERRUPTIBLE); |
| if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) { |
| if (info->flags & ROCKET_HUP_NOTIFY) |
| retval = -EAGAIN; |
| else |
| retval = -ERESTARTSYS; |
| break; |
| } |
| if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT))) |
| break; |
| if (signal_pending(current)) { |
| retval = -ERESTARTSYS; |
| break; |
| } |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n", |
| info->line, info->count, info->flags); |
| #endif |
| schedule(); /* Don't hold spinlock here, will hang PC */ |
| } |
| current->state = TASK_RUNNING; |
| remove_wait_queue(&info->open_wait, &wait); |
| |
| spin_lock_irqsave(&info->slock, flags); |
| |
| if (extra_count) |
| info->count++; |
| info->blocked_open--; |
| |
| spin_unlock_irqrestore(&info->slock, flags); |
| |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n", |
| info->line, info->count); |
| #endif |
| if (retval) |
| return retval; |
| info->flags |= ROCKET_NORMAL_ACTIVE; |
| return 0; |
| } |
| |
| /* |
| * Exception handler that opens a serial port. Creates xmit_buf storage, fills in |
| * port's r_port struct. Initializes the port hardware. |
| */ |
| static int rp_open(struct tty_struct *tty, struct file *filp) |
| { |
| struct r_port *info; |
| int line = 0, retval; |
| CHANNEL_t *cp; |
| unsigned long page; |
| |
| line = TTY_GET_LINE(tty); |
| if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL)) |
| return -ENXIO; |
| |
| page = __get_free_page(GFP_KERNEL); |
| if (!page) |
| return -ENOMEM; |
| |
| if (info->flags & ROCKET_CLOSING) { |
| interruptible_sleep_on(&info->close_wait); |
| free_page(page); |
| return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); |
| } |
| |
| /* |
| * We must not sleep from here until the port is marked fully in use. |
| */ |
| if (info->xmit_buf) |
| free_page(page); |
| else |
| info->xmit_buf = (unsigned char *) page; |
| |
| tty->driver_data = info; |
| info->tty = tty; |
| |
| if (info->count++ == 0) { |
| atomic_inc(&rp_num_ports_open); |
| |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "rocket mod++ = %d...", atomic_read(&rp_num_ports_open)); |
| #endif |
| } |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count); |
| #endif |
| |
| /* |
| * Info->count is now 1; so it's safe to sleep now. |
| */ |
| info->session = current->signal->session; |
| info->pgrp = process_group(current); |
| |
| if ((info->flags & ROCKET_INITIALIZED) == 0) { |
| cp = &info->channel; |
| sSetRxTrigger(cp, TRIG_1); |
| if (sGetChanStatus(cp) & CD_ACT) |
| info->cd_status = 1; |
| else |
| info->cd_status = 0; |
| sDisRxStatusMode(cp); |
| sFlushRxFIFO(cp); |
| sFlushTxFIFO(cp); |
| |
| sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); |
| sSetRxTrigger(cp, TRIG_1); |
| |
| sGetChanStatus(cp); |
| sDisRxStatusMode(cp); |
| sClrTxXOFF(cp); |
| |
| sDisCTSFlowCtl(cp); |
| sDisTxSoftFlowCtl(cp); |
| |
| sEnRxFIFO(cp); |
| sEnTransmit(cp); |
| |
| info->flags |= ROCKET_INITIALIZED; |
| |
| /* |
| * Set up the tty->alt_speed kludge |
| */ |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) |
| info->tty->alt_speed = 57600; |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) |
| info->tty->alt_speed = 115200; |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) |
| info->tty->alt_speed = 230400; |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) |
| info->tty->alt_speed = 460800; |
| |
| configure_r_port(info, NULL); |
| if (tty->termios->c_cflag & CBAUD) { |
| sSetDTR(cp); |
| sSetRTS(cp); |
| } |
| } |
| /* Starts (or resets) the maint polling loop */ |
| mod_timer(&rocket_timer, jiffies + POLL_PERIOD); |
| |
| retval = block_til_ready(tty, filp, info); |
| if (retval) { |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval); |
| #endif |
| return retval; |
| } |
| return 0; |
| } |
| |
| /* |
| * Exception handler that closes a serial port. info->count is considered critical. |
| */ |
| static void rp_close(struct tty_struct *tty, struct file *filp) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| unsigned long flags; |
| int timeout; |
| CHANNEL_t *cp; |
| |
| if (rocket_paranoia_check(info, "rp_close")) |
| return; |
| |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count); |
| #endif |
| |
| if (tty_hung_up_p(filp)) |
| return; |
| spin_lock_irqsave(&info->slock, flags); |
| |
| if ((tty->count == 1) && (info->count != 1)) { |
| /* |
| * Uh, oh. tty->count is 1, which means that the tty |
| * structure will be freed. Info->count should always |
| * be one in these conditions. If it's greater than |
| * one, we've got real problems, since it means the |
| * serial port won't be shutdown. |
| */ |
| printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, " |
| "info->count is %d\n", info->count); |
| info->count = 1; |
| } |
| if (--info->count < 0) { |
| printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n", |
| info->line, info->count); |
| info->count = 0; |
| } |
| if (info->count) { |
| spin_unlock_irqrestore(&info->slock, flags); |
| return; |
| } |
| info->flags |= ROCKET_CLOSING; |
| spin_unlock_irqrestore(&info->slock, flags); |
| |
| cp = &info->channel; |
| |
| /* |
| * Notify the line discpline to only process XON/XOFF characters |
| */ |
| tty->closing = 1; |
| |
| /* |
| * If transmission was throttled by the application request, |
| * just flush the xmit buffer. |
| */ |
| if (tty->flow_stopped) |
| rp_flush_buffer(tty); |
| |
| /* |
| * Wait for the transmit buffer to clear |
| */ |
| if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE) |
| tty_wait_until_sent(tty, info->closing_wait); |
| /* |
| * Before we drop DTR, make sure the UART transmitter |
| * has completely drained; this is especially |
| * important if there is a transmit FIFO! |
| */ |
| timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps; |
| if (timeout == 0) |
| timeout = 1; |
| rp_wait_until_sent(tty, timeout); |
| clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| |
| sDisTransmit(cp); |
| sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); |
| sDisCTSFlowCtl(cp); |
| sDisTxSoftFlowCtl(cp); |
| sClrTxXOFF(cp); |
| sFlushRxFIFO(cp); |
| sFlushTxFIFO(cp); |
| sClrRTS(cp); |
| if (C_HUPCL(tty)) |
| sClrDTR(cp); |
| |
| if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty)) |
| TTY_DRIVER_FLUSH_BUFFER(tty); |
| |
| tty_ldisc_flush(tty); |
| |
| clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| |
| if (info->blocked_open) { |
| if (info->close_delay) { |
| msleep_interruptible(jiffies_to_msecs(info->close_delay)); |
| } |
| wake_up_interruptible(&info->open_wait); |
| } else { |
| if (info->xmit_buf) { |
| free_page((unsigned long) info->xmit_buf); |
| info->xmit_buf = NULL; |
| } |
| } |
| info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE); |
| tty->closing = 0; |
| wake_up_interruptible(&info->close_wait); |
| atomic_dec(&rp_num_ports_open); |
| |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open)); |
| printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line); |
| #endif |
| |
| } |
| |
| static void rp_set_termios(struct tty_struct *tty, |
| struct termios *old_termios) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| unsigned cflag; |
| |
| if (rocket_paranoia_check(info, "rp_set_termios")) |
| return; |
| |
| cflag = tty->termios->c_cflag; |
| |
| if (cflag == old_termios->c_cflag) |
| return; |
| |
| /* |
| * This driver doesn't support CS5 or CS6 |
| */ |
| if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6)) |
| tty->termios->c_cflag = |
| ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE)); |
| |
| configure_r_port(info, old_termios); |
| |
| cp = &info->channel; |
| |
| /* Handle transition to B0 status */ |
| if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) { |
| sClrDTR(cp); |
| sClrRTS(cp); |
| } |
| |
| /* Handle transition away from B0 status */ |
| if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) { |
| if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS)) |
| sSetRTS(cp); |
| sSetDTR(cp); |
| } |
| |
| if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { |
| tty->hw_stopped = 0; |
| rp_start(tty); |
| } |
| } |
| |
| static void rp_break(struct tty_struct *tty, int break_state) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| unsigned long flags; |
| |
| if (rocket_paranoia_check(info, "rp_break")) |
| return; |
| |
| spin_lock_irqsave(&info->slock, flags); |
| if (break_state == -1) |
| sSendBreak(&info->channel); |
| else |
| sClrBreak(&info->channel); |
| spin_unlock_irqrestore(&info->slock, flags); |
| } |
| |
| /* |
| * sGetChanRI used to be a macro in rocket_int.h. When the functionality for |
| * the UPCI boards was added, it was decided to make this a function because |
| * the macro was getting too complicated. All cases except the first one |
| * (UPCIRingInd) are taken directly from the original macro. |
| */ |
| static int sGetChanRI(CHANNEL_T * ChP) |
| { |
| CONTROLLER_t *CtlP = ChP->CtlP; |
| int ChanNum = ChP->ChanNum; |
| int RingInd = 0; |
| |
| if (CtlP->UPCIRingInd) |
| RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]); |
| else if (CtlP->AltChanRingIndicator) |
| RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT; |
| else if (CtlP->boardType == ROCKET_TYPE_PC104) |
| RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]); |
| |
| return RingInd; |
| } |
| |
| /********************************************************************************************/ |
| /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */ |
| |
| /* |
| * Returns the state of the serial modem control lines. These next 2 functions |
| * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs. |
| */ |
| static int rp_tiocmget(struct tty_struct *tty, struct file *file) |
| { |
| struct r_port *info = (struct r_port *)tty->driver_data; |
| unsigned int control, result, ChanStatus; |
| |
| ChanStatus = sGetChanStatusLo(&info->channel); |
| control = info->channel.TxControl[3]; |
| result = ((control & SET_RTS) ? TIOCM_RTS : 0) | |
| ((control & SET_DTR) ? TIOCM_DTR : 0) | |
| ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) | |
| (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) | |
| ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) | |
| ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0); |
| |
| return result; |
| } |
| |
| /* |
| * Sets the modem control lines |
| */ |
| static int rp_tiocmset(struct tty_struct *tty, struct file *file, |
| unsigned int set, unsigned int clear) |
| { |
| struct r_port *info = (struct r_port *)tty->driver_data; |
| |
| if (set & TIOCM_RTS) |
| info->channel.TxControl[3] |= SET_RTS; |
| if (set & TIOCM_DTR) |
| info->channel.TxControl[3] |= SET_DTR; |
| if (clear & TIOCM_RTS) |
| info->channel.TxControl[3] &= ~SET_RTS; |
| if (clear & TIOCM_DTR) |
| info->channel.TxControl[3] &= ~SET_DTR; |
| |
| sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0])); |
| return 0; |
| } |
| |
| static int get_config(struct r_port *info, struct rocket_config __user *retinfo) |
| { |
| struct rocket_config tmp; |
| |
| if (!retinfo) |
| return -EFAULT; |
| memset(&tmp, 0, sizeof (tmp)); |
| tmp.line = info->line; |
| tmp.flags = info->flags; |
| tmp.close_delay = info->close_delay; |
| tmp.closing_wait = info->closing_wait; |
| tmp.port = rcktpt_io_addr[(info->line >> 5) & 3]; |
| |
| if (copy_to_user(retinfo, &tmp, sizeof (*retinfo))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int set_config(struct r_port *info, struct rocket_config __user *new_info) |
| { |
| struct rocket_config new_serial; |
| |
| if (copy_from_user(&new_serial, new_info, sizeof (new_serial))) |
| return -EFAULT; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| { |
| if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) |
| return -EPERM; |
| info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK)); |
| configure_r_port(info, NULL); |
| return 0; |
| } |
| |
| info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS)); |
| info->close_delay = new_serial.close_delay; |
| info->closing_wait = new_serial.closing_wait; |
| |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) |
| info->tty->alt_speed = 57600; |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) |
| info->tty->alt_speed = 115200; |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) |
| info->tty->alt_speed = 230400; |
| if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) |
| info->tty->alt_speed = 460800; |
| |
| configure_r_port(info, NULL); |
| return 0; |
| } |
| |
| /* |
| * This function fills in a rocket_ports struct with information |
| * about what boards/ports are in the system. This info is passed |
| * to user space. See setrocket.c where the info is used to create |
| * the /dev/ttyRx ports. |
| */ |
| static int get_ports(struct r_port *info, struct rocket_ports __user *retports) |
| { |
| struct rocket_ports tmp; |
| int board; |
| |
| if (!retports) |
| return -EFAULT; |
| memset(&tmp, 0, sizeof (tmp)); |
| tmp.tty_major = rocket_driver->major; |
| |
| for (board = 0; board < 4; board++) { |
| tmp.rocketModel[board].model = rocketModel[board].model; |
| strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString); |
| tmp.rocketModel[board].numPorts = rocketModel[board].numPorts; |
| tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2; |
| tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber; |
| } |
| if (copy_to_user(retports, &tmp, sizeof (*retports))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int reset_rm2(struct r_port *info, void __user *arg) |
| { |
| int reset; |
| |
| if (copy_from_user(&reset, arg, sizeof (int))) |
| return -EFAULT; |
| if (reset) |
| reset = 1; |
| |
| if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII && |
| rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII) |
| return -EINVAL; |
| |
| if (info->ctlp->BusType == isISA) |
| sModemReset(info->ctlp, info->chan, reset); |
| else |
| sPCIModemReset(info->ctlp, info->chan, reset); |
| |
| return 0; |
| } |
| |
| static int get_version(struct r_port *info, struct rocket_version __user *retvers) |
| { |
| if (copy_to_user(retvers, &driver_version, sizeof (*retvers))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| /* IOCTL call handler into the driver */ |
| static int rp_ioctl(struct tty_struct *tty, struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| void __user *argp = (void __user *)arg; |
| |
| if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl")) |
| return -ENXIO; |
| |
| switch (cmd) { |
| case RCKP_GET_STRUCT: |
| if (copy_to_user(argp, info, sizeof (struct r_port))) |
| return -EFAULT; |
| return 0; |
| case RCKP_GET_CONFIG: |
| return get_config(info, argp); |
| case RCKP_SET_CONFIG: |
| return set_config(info, argp); |
| case RCKP_GET_PORTS: |
| return get_ports(info, argp); |
| case RCKP_RESET_RM2: |
| return reset_rm2(info, argp); |
| case RCKP_GET_VERSION: |
| return get_version(info, argp); |
| default: |
| return -ENOIOCTLCMD; |
| } |
| return 0; |
| } |
| |
| static void rp_send_xchar(struct tty_struct *tty, char ch) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| |
| if (rocket_paranoia_check(info, "rp_send_xchar")) |
| return; |
| |
| cp = &info->channel; |
| if (sGetTxCnt(cp)) |
| sWriteTxPrioByte(cp, ch); |
| else |
| sWriteTxByte(sGetTxRxDataIO(cp), ch); |
| } |
| |
| static void rp_throttle(struct tty_struct *tty) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| |
| #ifdef ROCKET_DEBUG_THROTTLE |
| printk(KERN_INFO "throttle %s: %d....\n", tty->name, |
| tty->ldisc.chars_in_buffer(tty)); |
| #endif |
| |
| if (rocket_paranoia_check(info, "rp_throttle")) |
| return; |
| |
| cp = &info->channel; |
| if (I_IXOFF(tty)) |
| rp_send_xchar(tty, STOP_CHAR(tty)); |
| |
| sClrRTS(&info->channel); |
| } |
| |
| static void rp_unthrottle(struct tty_struct *tty) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| #ifdef ROCKET_DEBUG_THROTTLE |
| printk(KERN_INFO "unthrottle %s: %d....\n", tty->name, |
| tty->ldisc.chars_in_buffer(tty)); |
| #endif |
| |
| if (rocket_paranoia_check(info, "rp_throttle")) |
| return; |
| |
| cp = &info->channel; |
| if (I_IXOFF(tty)) |
| rp_send_xchar(tty, START_CHAR(tty)); |
| |
| sSetRTS(&info->channel); |
| } |
| |
| /* |
| * ------------------------------------------------------------ |
| * rp_stop() and rp_start() |
| * |
| * This routines are called before setting or resetting tty->stopped. |
| * They enable or disable transmitter interrupts, as necessary. |
| * ------------------------------------------------------------ |
| */ |
| static void rp_stop(struct tty_struct *tty) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| |
| #ifdef ROCKET_DEBUG_FLOW |
| printk(KERN_INFO "stop %s: %d %d....\n", tty->name, |
| info->xmit_cnt, info->xmit_fifo_room); |
| #endif |
| |
| if (rocket_paranoia_check(info, "rp_stop")) |
| return; |
| |
| if (sGetTxCnt(&info->channel)) |
| sDisTransmit(&info->channel); |
| } |
| |
| static void rp_start(struct tty_struct *tty) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| |
| #ifdef ROCKET_DEBUG_FLOW |
| printk(KERN_INFO "start %s: %d %d....\n", tty->name, |
| info->xmit_cnt, info->xmit_fifo_room); |
| #endif |
| |
| if (rocket_paranoia_check(info, "rp_stop")) |
| return; |
| |
| sEnTransmit(&info->channel); |
| set_bit((info->aiop * 8) + info->chan, |
| (void *) &xmit_flags[info->board]); |
| } |
| |
| /* |
| * rp_wait_until_sent() --- wait until the transmitter is empty |
| */ |
| static void rp_wait_until_sent(struct tty_struct *tty, int timeout) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| unsigned long orig_jiffies; |
| int check_time, exit_time; |
| int txcnt; |
| |
| if (rocket_paranoia_check(info, "rp_wait_until_sent")) |
| return; |
| |
| cp = &info->channel; |
| |
| orig_jiffies = jiffies; |
| #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT |
| printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout, |
| jiffies); |
| printk(KERN_INFO "cps=%d...", info->cps); |
| #endif |
| while (1) { |
| txcnt = sGetTxCnt(cp); |
| if (!txcnt) { |
| if (sGetChanStatusLo(cp) & TXSHRMT) |
| break; |
| check_time = (HZ / info->cps) / 5; |
| } else { |
| check_time = HZ * txcnt / info->cps; |
| } |
| if (timeout) { |
| exit_time = orig_jiffies + timeout - jiffies; |
| if (exit_time <= 0) |
| break; |
| if (exit_time < check_time) |
| check_time = exit_time; |
| } |
| if (check_time == 0) |
| check_time = 1; |
| #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT |
| printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time); |
| #endif |
| msleep_interruptible(jiffies_to_msecs(check_time)); |
| if (signal_pending(current)) |
| break; |
| } |
| current->state = TASK_RUNNING; |
| #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT |
| printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies); |
| #endif |
| } |
| |
| /* |
| * rp_hangup() --- called by tty_hangup() when a hangup is signaled. |
| */ |
| static void rp_hangup(struct tty_struct *tty) |
| { |
| CHANNEL_t *cp; |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| |
| if (rocket_paranoia_check(info, "rp_hangup")) |
| return; |
| |
| #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP)) |
| printk(KERN_INFO "rp_hangup of ttyR%d...", info->line); |
| #endif |
| rp_flush_buffer(tty); |
| if (info->flags & ROCKET_CLOSING) |
| return; |
| if (info->count) |
| atomic_dec(&rp_num_ports_open); |
| clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| |
| info->count = 0; |
| info->flags &= ~ROCKET_NORMAL_ACTIVE; |
| info->tty = NULL; |
| |
| cp = &info->channel; |
| sDisRxFIFO(cp); |
| sDisTransmit(cp); |
| sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); |
| sDisCTSFlowCtl(cp); |
| sDisTxSoftFlowCtl(cp); |
| sClrTxXOFF(cp); |
| info->flags &= ~ROCKET_INITIALIZED; |
| |
| wake_up_interruptible(&info->open_wait); |
| } |
| |
| /* |
| * Exception handler - write char routine. The RocketPort driver uses a |
| * double-buffering strategy, with the twist that if the in-memory CPU |
| * buffer is empty, and there's space in the transmit FIFO, the |
| * writing routines will write directly to transmit FIFO. |
| * Write buffer and counters protected by spinlocks |
| */ |
| static void rp_put_char(struct tty_struct *tty, unsigned char ch) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| unsigned long flags; |
| |
| if (rocket_paranoia_check(info, "rp_put_char")) |
| return; |
| |
| /* Grab the port write semaphore, locking out other processes that try to write to this port */ |
| down(&info->write_sem); |
| |
| #ifdef ROCKET_DEBUG_WRITE |
| printk(KERN_INFO "rp_put_char %c...", ch); |
| #endif |
| |
| spin_lock_irqsave(&info->slock, flags); |
| cp = &info->channel; |
| |
| if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0) |
| info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); |
| |
| if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) { |
| info->xmit_buf[info->xmit_head++] = ch; |
| info->xmit_head &= XMIT_BUF_SIZE - 1; |
| info->xmit_cnt++; |
| set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| } else { |
| sOutB(sGetTxRxDataIO(cp), ch); |
| info->xmit_fifo_room--; |
| } |
| spin_unlock_irqrestore(&info->slock, flags); |
| up(&info->write_sem); |
| } |
| |
| /* |
| * Exception handler - write routine, called when user app writes to the device. |
| * A per port write semaphore is used to protect from another process writing to |
| * this port at the same time. This other process could be running on the other CPU |
| * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out). |
| * Spinlocks protect the info xmit members. |
| */ |
| static int rp_write(struct tty_struct *tty, |
| const unsigned char *buf, int count) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| const unsigned char *b; |
| int c, retval = 0; |
| unsigned long flags; |
| |
| if (count <= 0 || rocket_paranoia_check(info, "rp_write")) |
| return 0; |
| |
| down_interruptible(&info->write_sem); |
| |
| #ifdef ROCKET_DEBUG_WRITE |
| printk(KERN_INFO "rp_write %d chars...", count); |
| #endif |
| cp = &info->channel; |
| |
| if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count) |
| info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); |
| |
| /* |
| * If the write queue for the port is empty, and there is FIFO space, stuff bytes |
| * into FIFO. Use the write queue for temp storage. |
| */ |
| if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) { |
| c = min(count, info->xmit_fifo_room); |
| b = buf; |
| |
| /* Push data into FIFO, 2 bytes at a time */ |
| sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2); |
| |
| /* If there is a byte remaining, write it */ |
| if (c & 1) |
| sOutB(sGetTxRxDataIO(cp), b[c - 1]); |
| |
| retval += c; |
| buf += c; |
| count -= c; |
| |
| spin_lock_irqsave(&info->slock, flags); |
| info->xmit_fifo_room -= c; |
| spin_unlock_irqrestore(&info->slock, flags); |
| } |
| |
| /* If count is zero, we wrote it all and are done */ |
| if (!count) |
| goto end; |
| |
| /* Write remaining data into the port's xmit_buf */ |
| while (1) { |
| if (info->tty == 0) /* Seemingly obligatory check... */ |
| goto end; |
| |
| c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head)); |
| if (c <= 0) |
| break; |
| |
| b = buf; |
| memcpy(info->xmit_buf + info->xmit_head, b, c); |
| |
| spin_lock_irqsave(&info->slock, flags); |
| info->xmit_head = |
| (info->xmit_head + c) & (XMIT_BUF_SIZE - 1); |
| info->xmit_cnt += c; |
| spin_unlock_irqrestore(&info->slock, flags); |
| |
| buf += c; |
| count -= c; |
| retval += c; |
| } |
| |
| if ((retval > 0) && !tty->stopped && !tty->hw_stopped) |
| set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
| |
| end: |
| if (info->xmit_cnt < WAKEUP_CHARS) { |
| tty_wakeup(tty); |
| wake_up_interruptible(&tty->write_wait); |
| #ifdef ROCKETPORT_HAVE_POLL_WAIT |
| wake_up_interruptible(&tty->poll_wait); |
| #endif |
| } |
| up(&info->write_sem); |
| return retval; |
| } |
| |
| /* |
| * Return the number of characters that can be sent. We estimate |
| * only using the in-memory transmit buffer only, and ignore the |
| * potential space in the transmit FIFO. |
| */ |
| static int rp_write_room(struct tty_struct *tty) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| int ret; |
| |
| if (rocket_paranoia_check(info, "rp_write_room")) |
| return 0; |
| |
| ret = XMIT_BUF_SIZE - info->xmit_cnt - 1; |
| if (ret < 0) |
| ret = 0; |
| #ifdef ROCKET_DEBUG_WRITE |
| printk(KERN_INFO "rp_write_room returns %d...", ret); |
| #endif |
| return ret; |
| } |
| |
| /* |
| * Return the number of characters in the buffer. Again, this only |
| * counts those characters in the in-memory transmit buffer. |
| */ |
| static int rp_chars_in_buffer(struct tty_struct *tty) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| |
| if (rocket_paranoia_check(info, "rp_chars_in_buffer")) |
| return 0; |
| |
| cp = &info->channel; |
| |
| #ifdef ROCKET_DEBUG_WRITE |
| printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt); |
| #endif |
| return info->xmit_cnt; |
| } |
| |
| /* |
| * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the |
| * r_port struct for the port. Note that spinlock are used to protect info members, |
| * do not call this function if the spinlock is already held. |
| */ |
| static void rp_flush_buffer(struct tty_struct *tty) |
| { |
| struct r_port *info = (struct r_port *) tty->driver_data; |
| CHANNEL_t *cp; |
| unsigned long flags; |
| |
| if (rocket_paranoia_check(info, "rp_flush_buffer")) |
| return; |
| |
| spin_lock_irqsave(&info->slock, flags); |
| info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| spin_unlock_irqrestore(&info->slock, flags); |
| |
| wake_up_interruptible(&tty->write_wait); |
| #ifdef ROCKETPORT_HAVE_POLL_WAIT |
| wake_up_interruptible(&tty->poll_wait); |
| #endif |
| tty_wakeup(tty); |
| |
| cp = &info->channel; |
| sFlushTxFIFO(cp); |
| } |
| |
| #ifdef CONFIG_PCI |
| |
| /* |
| * Called when a PCI card is found. Retrieves and stores model information, |
| * init's aiopic and serial port hardware. |
| * Inputs: i is the board number (0-n) |
| */ |
| static __init int register_PCI(int i, struct pci_dev *dev) |
| { |
| int num_aiops, aiop, max_num_aiops, num_chan, chan; |
| unsigned int aiopio[MAX_AIOPS_PER_BOARD]; |
| char *str, *board_type; |
| CONTROLLER_t *ctlp; |
| |
| int fast_clock = 0; |
| int altChanRingIndicator = 0; |
| int ports_per_aiop = 8; |
| int ret; |
| unsigned int class_rev; |
| WordIO_t ConfigIO = 0; |
| ByteIO_t UPCIRingInd = 0; |
| |
| if (!dev || pci_enable_device(dev)) |
| return 0; |
| |
| rcktpt_io_addr[i] = pci_resource_start(dev, 0); |
| ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); |
| |
| if (ret) { |
| printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n"); |
| return 0; |
| } |
| |
| rcktpt_type[i] = ROCKET_TYPE_NORMAL; |
| rocketModel[i].loadrm2 = 0; |
| rocketModel[i].startingPortNumber = nextLineNumber; |
| |
| /* Depending on the model, set up some config variables */ |
| switch (dev->device) { |
| case PCI_DEVICE_ID_RP4QUAD: |
| str = "Quadcable"; |
| max_num_aiops = 1; |
| ports_per_aiop = 4; |
| rocketModel[i].model = MODEL_RP4QUAD; |
| strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable"); |
| rocketModel[i].numPorts = 4; |
| break; |
| case PCI_DEVICE_ID_RP8OCTA: |
| str = "Octacable"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_RP8OCTA; |
| strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable"); |
| rocketModel[i].numPorts = 8; |
| break; |
| case PCI_DEVICE_ID_URP8OCTA: |
| str = "Octacable"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_UPCI_RP8OCTA; |
| strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable"); |
| rocketModel[i].numPorts = 8; |
| break; |
| case PCI_DEVICE_ID_RP8INTF: |
| str = "8"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_RP8INTF; |
| strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F"); |
| rocketModel[i].numPorts = 8; |
| break; |
| case PCI_DEVICE_ID_URP8INTF: |
| str = "8"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_UPCI_RP8INTF; |
| strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F"); |
| rocketModel[i].numPorts = 8; |
| break; |
| case PCI_DEVICE_ID_RP8J: |
| str = "8J"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_RP8J; |
| strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors"); |
| rocketModel[i].numPorts = 8; |
| break; |
| case PCI_DEVICE_ID_RP4J: |
| str = "4J"; |
| max_num_aiops = 1; |
| ports_per_aiop = 4; |
| rocketModel[i].model = MODEL_RP4J; |
| strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors"); |
| rocketModel[i].numPorts = 4; |
| break; |
| case PCI_DEVICE_ID_RP8SNI: |
| str = "8 (DB78 Custom)"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_RP8SNI; |
| strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78"); |
| rocketModel[i].numPorts = 8; |
| break; |
| case PCI_DEVICE_ID_RP16SNI: |
| str = "16 (DB78 Custom)"; |
| max_num_aiops = 2; |
| rocketModel[i].model = MODEL_RP16SNI; |
| strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78"); |
| rocketModel[i].numPorts = 16; |
| break; |
| case PCI_DEVICE_ID_RP16INTF: |
| str = "16"; |
| max_num_aiops = 2; |
| rocketModel[i].model = MODEL_RP16INTF; |
| strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F"); |
| rocketModel[i].numPorts = 16; |
| break; |
| case PCI_DEVICE_ID_URP16INTF: |
| str = "16"; |
| max_num_aiops = 2; |
| rocketModel[i].model = MODEL_UPCI_RP16INTF; |
| strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F"); |
| rocketModel[i].numPorts = 16; |
| break; |
| case PCI_DEVICE_ID_CRP16INTF: |
| str = "16"; |
| max_num_aiops = 2; |
| rocketModel[i].model = MODEL_CPCI_RP16INTF; |
| strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F"); |
| rocketModel[i].numPorts = 16; |
| break; |
| case PCI_DEVICE_ID_RP32INTF: |
| str = "32"; |
| max_num_aiops = 4; |
| rocketModel[i].model = MODEL_RP32INTF; |
| strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F"); |
| rocketModel[i].numPorts = 32; |
| break; |
| case PCI_DEVICE_ID_URP32INTF: |
| str = "32"; |
| max_num_aiops = 4; |
| rocketModel[i].model = MODEL_UPCI_RP32INTF; |
| strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F"); |
| rocketModel[i].numPorts = 32; |
| break; |
| case PCI_DEVICE_ID_RPP4: |
| str = "Plus Quadcable"; |
| max_num_aiops = 1; |
| ports_per_aiop = 4; |
| altChanRingIndicator++; |
| fast_clock++; |
| rocketModel[i].model = MODEL_RPP4; |
| strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port"); |
| rocketModel[i].numPorts = 4; |
| break; |
| case PCI_DEVICE_ID_RPP8: |
| str = "Plus Octacable"; |
| max_num_aiops = 2; |
| ports_per_aiop = 4; |
| altChanRingIndicator++; |
| fast_clock++; |
| rocketModel[i].model = MODEL_RPP8; |
| strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port"); |
| rocketModel[i].numPorts = 8; |
| break; |
| case PCI_DEVICE_ID_RP2_232: |
| str = "Plus 2 (RS-232)"; |
| max_num_aiops = 1; |
| ports_per_aiop = 2; |
| altChanRingIndicator++; |
| fast_clock++; |
| rocketModel[i].model = MODEL_RP2_232; |
| strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232"); |
| rocketModel[i].numPorts = 2; |
| break; |
| case PCI_DEVICE_ID_RP2_422: |
| str = "Plus 2 (RS-422)"; |
| max_num_aiops = 1; |
| ports_per_aiop = 2; |
| altChanRingIndicator++; |
| fast_clock++; |
| rocketModel[i].model = MODEL_RP2_422; |
| strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422"); |
| rocketModel[i].numPorts = 2; |
| break; |
| case PCI_DEVICE_ID_RP6M: |
| |
| max_num_aiops = 1; |
| ports_per_aiop = 6; |
| str = "6-port"; |
| |
| /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */ |
| if ((class_rev & 0xFF) == 1) { |
| rcktpt_type[i] = ROCKET_TYPE_MODEMII; |
| rocketModel[i].loadrm2 = 1; |
| } else { |
| rcktpt_type[i] = ROCKET_TYPE_MODEM; |
| } |
| |
| rocketModel[i].model = MODEL_RP6M; |
| strcpy(rocketModel[i].modelString, "RocketModem 6 port"); |
| rocketModel[i].numPorts = 6; |
| break; |
| case PCI_DEVICE_ID_RP4M: |
| max_num_aiops = 1; |
| ports_per_aiop = 4; |
| str = "4-port"; |
| if ((class_rev & 0xFF) == 1) { |
| rcktpt_type[i] = ROCKET_TYPE_MODEMII; |
| rocketModel[i].loadrm2 = 1; |
| } else { |
| rcktpt_type[i] = ROCKET_TYPE_MODEM; |
| } |
| |
| rocketModel[i].model = MODEL_RP4M; |
| strcpy(rocketModel[i].modelString, "RocketModem 4 port"); |
| rocketModel[i].numPorts = 4; |
| break; |
| default: |
| str = "(unknown/unsupported)"; |
| max_num_aiops = 0; |
| break; |
| } |
| |
| /* |
| * Check for UPCI boards. |
| */ |
| |
| switch (dev->device) { |
| case PCI_DEVICE_ID_URP32INTF: |
| case PCI_DEVICE_ID_URP8INTF: |
| case PCI_DEVICE_ID_URP16INTF: |
| case PCI_DEVICE_ID_CRP16INTF: |
| case PCI_DEVICE_ID_URP8OCTA: |
| rcktpt_io_addr[i] = pci_resource_start(dev, 2); |
| ConfigIO = pci_resource_start(dev, 1); |
| if (dev->device == PCI_DEVICE_ID_URP8OCTA) { |
| UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; |
| |
| /* |
| * Check for octa or quad cable. |
| */ |
| if (! |
| (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) & |
| PCI_GPIO_CTRL_8PORT)) { |
| str = "Quadcable"; |
| ports_per_aiop = 4; |
| rocketModel[i].numPorts = 4; |
| } |
| } |
| break; |
| case PCI_DEVICE_ID_UPCI_RM3_8PORT: |
| str = "8 ports"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_UPCI_RM3_8PORT; |
| strcpy(rocketModel[i].modelString, "RocketModem III 8 port"); |
| rocketModel[i].numPorts = 8; |
| rcktpt_io_addr[i] = pci_resource_start(dev, 2); |
| UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; |
| ConfigIO = pci_resource_start(dev, 1); |
| rcktpt_type[i] = ROCKET_TYPE_MODEMIII; |
| break; |
| case PCI_DEVICE_ID_UPCI_RM3_4PORT: |
| str = "4 ports"; |
| max_num_aiops = 1; |
| rocketModel[i].model = MODEL_UPCI_RM3_4PORT; |
| strcpy(rocketModel[i].modelString, "RocketModem III 4 port"); |
| rocketModel[i].numPorts = 4; |
| rcktpt_io_addr[i] = pci_resource_start(dev, 2); |
| UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; |
| ConfigIO = pci_resource_start(dev, 1); |
| rcktpt_type[i] = ROCKET_TYPE_MODEMIII; |
| break; |
| default: |
| break; |
| } |
| |
| switch (rcktpt_type[i]) { |
| case ROCKET_TYPE_MODEM: |
| board_type = "RocketModem"; |
| break; |
| case ROCKET_TYPE_MODEMII: |
| board_type = "RocketModem II"; |
| break; |
| case ROCKET_TYPE_MODEMIII: |
| board_type = "RocketModem III"; |
| break; |
| default: |
| board_type = "RocketPort"; |
| break; |
| } |
| |
| if (fast_clock) { |
| sClockPrescale = 0x12; /* mod 2 (divide by 3) */ |
| rp_baud_base[i] = 921600; |
| } else { |
| /* |
| * If support_low_speed is set, use the slow clock |
| * prescale, which supports 50 bps |
| */ |
| if (support_low_speed) { |
| /* mod 9 (divide by 10) prescale */ |
| sClockPrescale = 0x19; |
| rp_baud_base[i] = 230400; |
| } else { |
| /* mod 4 (devide by 5) prescale */ |
| sClockPrescale = 0x14; |
| rp_baud_base[i] = 460800; |
| } |
| } |
| |
| for (aiop = 0; aiop < max_num_aiops; aiop++) |
| aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40); |
| ctlp = sCtlNumToCtlPtr(i); |
| num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd); |
| for (aiop = 0; aiop < max_num_aiops; aiop++) |
| ctlp->AiopNumChan[aiop] = ports_per_aiop; |
| |
| printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, " |
| "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev), |
| rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString); |
| printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n", |
| rocketModel[i].modelString, |
| rocketModel[i].startingPortNumber, |
| rocketModel[i].startingPortNumber + |
| rocketModel[i].numPorts - 1); |
| |
| if (num_aiops <= 0) { |
| rcktpt_io_addr[i] = 0; |
| return (0); |
| } |
| is_PCI[i] = 1; |
| |
| /* Reset the AIOPIC, init the serial ports */ |
| for (aiop = 0; aiop < num_aiops; aiop++) { |
| sResetAiopByNum(ctlp, aiop); |
| num_chan = ports_per_aiop; |
| for (chan = 0; chan < num_chan; chan++) |
| init_r_port(i, aiop, chan, dev); |
| } |
| |
| /* Rocket modems must be reset */ |
| if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || |
| (rcktpt_type[i] == ROCKET_TYPE_MODEMII) || |
| (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) { |
| num_chan = ports_per_aiop; |
| for (chan = 0; chan < num_chan; chan++) |
| sPCIModemReset(ctlp, chan, 1); |
| mdelay(500); |
| for (chan = 0; chan < num_chan; chan++) |
| sPCIModemReset(ctlp, chan, 0); |
| mdelay(500); |
| rmSpeakerReset(ctlp, rocketModel[i].model); |
| } |
| return (1); |
| } |
| |
| /* |
| * Probes for PCI cards, inits them if found |
| * Input: board_found = number of ISA boards already found, or the |
| * starting board number |
| * Returns: Number of PCI boards found |
| */ |
| static int __init init_PCI(int boards_found) |
| { |
| struct pci_dev *dev = NULL; |
| int count = 0; |
| |
| /* Work through the PCI device list, pulling out ours */ |
| while ((dev = pci_find_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) { |
| if (register_PCI(count + boards_found, dev)) |
| count++; |
| } |
| return (count); |
| } |
| |
| #endif /* CONFIG_PCI */ |
| |
| /* |
| * Probes for ISA cards |
| * Input: i = the board number to look for |
| * Returns: 1 if board found, 0 else |
| */ |
| static int __init init_ISA(int i) |
| { |
| int num_aiops, num_chan = 0, total_num_chan = 0; |
| int aiop, chan; |
| unsigned int aiopio[MAX_AIOPS_PER_BOARD]; |
| CONTROLLER_t *ctlp; |
| char *type_string; |
| |
| /* If io_addr is zero, no board configured */ |
| if (rcktpt_io_addr[i] == 0) |
| return (0); |
| |
| /* Reserve the IO region */ |
| if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) { |
| printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]); |
| rcktpt_io_addr[i] = 0; |
| return (0); |
| } |
| |
| ctlp = sCtlNumToCtlPtr(i); |
| |
| ctlp->boardType = rcktpt_type[i]; |
| |
| switch (rcktpt_type[i]) { |
| case ROCKET_TYPE_PC104: |
| type_string = "(PC104)"; |
| break; |
| case ROCKET_TYPE_MODEM: |
| type_string = "(RocketModem)"; |
| break; |
| case ROCKET_TYPE_MODEMII: |
| type_string = "(RocketModem II)"; |
| break; |
| default: |
| type_string = ""; |
| break; |
| } |
| |
| /* |
| * If support_low_speed is set, use the slow clock prescale, |
| * which supports 50 bps |
| */ |
| if (support_low_speed) { |
| sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */ |
| rp_baud_base[i] = 230400; |
| } else { |
| sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */ |
| rp_baud_base[i] = 460800; |
| } |
| |
| for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++) |
| aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400); |
| |
| num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0); |
| |
| if (ctlp->boardType == ROCKET_TYPE_PC104) { |
| sEnAiop(ctlp, 2); /* only one AIOPIC, but these */ |
| sEnAiop(ctlp, 3); /* CSels used for other stuff */ |
| } |
| |
| /* If something went wrong initing the AIOP's release the ISA IO memory */ |
| if (num_aiops <= 0) { |
| release_region(rcktpt_io_addr[i], 64); |
| rcktpt_io_addr[i] = 0; |
| return (0); |
| } |
| |
| rocketModel[i].startingPortNumber = nextLineNumber; |
| |
| for (aiop = 0; aiop < num_aiops; aiop++) { |
| sResetAiopByNum(ctlp, aiop); |
| sEnAiop(ctlp, aiop); |
| num_chan = sGetAiopNumChan(ctlp, aiop); |
| total_num_chan += num_chan; |
| for (chan = 0; chan < num_chan; chan++) |
| init_r_port(i, aiop, chan, NULL); |
| } |
| is_PCI[i] = 0; |
| if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) { |
| num_chan = sGetAiopNumChan(ctlp, 0); |
| total_num_chan = num_chan; |
| for (chan = 0; chan < num_chan; chan++) |
| sModemReset(ctlp, chan, 1); |
| mdelay(500); |
| for (chan = 0; chan < num_chan; chan++) |
| sModemReset(ctlp, chan, 0); |
| mdelay(500); |
| strcpy(rocketModel[i].modelString, "RocketModem ISA"); |
| } else { |
| strcpy(rocketModel[i].modelString, "RocketPort ISA"); |
| } |
| rocketModel[i].numPorts = total_num_chan; |
| rocketModel[i].model = MODEL_ISA; |
| |
| printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n", |
| i, rcktpt_io_addr[i], num_aiops, type_string); |
| |
| printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n", |
| rocketModel[i].modelString, |
| rocketModel[i].startingPortNumber, |
| rocketModel[i].startingPortNumber + |
| rocketModel[i].numPorts - 1); |
| |
| return (1); |
| } |
| |
| static struct tty_operations rocket_ops = { |
| .open = rp_open, |
| .close = rp_close, |
| .write = rp_write, |
| .put_char = rp_put_char, |
| .write_room = rp_write_room, |
| .chars_in_buffer = rp_chars_in_buffer, |
| .flush_buffer = rp_flush_buffer, |
| .ioctl = rp_ioctl, |
| .throttle = rp_throttle, |
| .unthrottle = rp_unthrottle, |
| .set_termios = rp_set_termios, |
| .stop = rp_stop, |
| .start = rp_start, |
| .hangup = rp_hangup, |
| .break_ctl = rp_break, |
| .send_xchar = rp_send_xchar, |
| .wait_until_sent = rp_wait_until_sent, |
| .tiocmget = rp_tiocmget, |
| .tiocmset = rp_tiocmset, |
| }; |
| |
| /* |
| * The module "startup" routine; it's run when the module is loaded. |
| */ |
| static int __init rp_init(void) |
| { |
| int retval, pci_boards_found, isa_boards_found, i; |
| |
| printk(KERN_INFO "RocketPort device driver module, version %s, %s\n", |
| ROCKET_VERSION, ROCKET_DATE); |
| |
| rocket_driver = alloc_tty_driver(MAX_RP_PORTS); |
| if (!rocket_driver) |
| return -ENOMEM; |
| |
| /* |
| * Set up the timer channel. |
| */ |
| init_timer(&rocket_timer); |
| rocket_timer.function = rp_do_poll; |
| |
| /* |
| * Initialize the array of pointers to our own internal state |
| * structures. |
| */ |
| memset(rp_table, 0, sizeof (rp_table)); |
| memset(xmit_flags, 0, sizeof (xmit_flags)); |
| |
| for (i = 0; i < MAX_RP_PORTS; i++) |
| lineNumbers[i] = 0; |
| nextLineNumber = 0; |
| memset(rocketModel, 0, sizeof (rocketModel)); |
| |
| /* |
| * If board 1 is non-zero, there is at least one ISA configured. If controller is |
| * zero, use the default controller IO address of board1 + 0x40. |
| */ |
| if (board1) { |
| if (controller == 0) |
| controller = board1 + 0x40; |
| } else { |
| controller = 0; /* Used as a flag, meaning no ISA boards */ |
| } |
| |
| /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */ |
| if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) { |
| printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller); |
| return -EBUSY; |
| } |
| |
| /* Store ISA variable retrieved from command line or .conf file. */ |
| rcktpt_io_addr[0] = board1; |
| rcktpt_io_addr[1] = board2; |
| rcktpt_io_addr[2] = board3; |
| rcktpt_io_addr[3] = board4; |
| |
| rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0]; |
| rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1]; |
| rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2]; |
| rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; |
| rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3]; |
| |
| /* |
| * Set up the tty driver structure and then register this |
| * driver with the tty layer. |
| */ |
| |
| rocket_driver->owner = THIS_MODULE; |
| rocket_driver->flags = TTY_DRIVER_NO_DEVFS; |
| rocket_driver->devfs_name = "tts/R"; |
| rocket_driver->name = "ttyR"; |
| rocket_driver->driver_name = "Comtrol RocketPort"; |
| rocket_driver->major = TTY_ROCKET_MAJOR; |
| rocket_driver->minor_start = 0; |
| rocket_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| rocket_driver->subtype = SERIAL_TYPE_NORMAL; |
| rocket_driver->init_termios = tty_std_termios; |
| rocket_driver->init_termios.c_cflag = |
| B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| #ifdef ROCKET_SOFT_FLOW |
| rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; |
| #endif |
| tty_set_operations(rocket_driver, &rocket_ops); |
| |
| retval = tty_register_driver(rocket_driver); |
| if (retval < 0) { |
| printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval); |
| put_tty_driver(rocket_driver); |
| return -1; |
| } |
| |
| #ifdef ROCKET_DEBUG_OPEN |
| printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major); |
| #endif |
| |
| /* |
| * OK, let's probe each of the controllers looking for boards. Any boards found |
| * will be initialized here. |
| */ |
| isa_boards_found = 0; |
| pci_boards_found = 0; |
| |
| for (i = 0; i < NUM_BOARDS; i++) { |
| if (init_ISA(i)) |
| isa_boards_found++; |
| } |
| |
| #ifdef CONFIG_PCI |
| if (isa_boards_found < NUM_BOARDS) |
| pci_boards_found = init_PCI(isa_boards_found); |
| #endif |
| |
| max_board = pci_boards_found + isa_boards_found; |
| |
| if (max_board == 0) { |
| printk(KERN_INFO "No rocketport ports found; unloading driver.\n"); |
| del_timer_sync(&rocket_timer); |
| tty_unregister_driver(rocket_driver); |
| put_tty_driver(rocket_driver); |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| |
| static void rp_cleanup_module(void) |
| { |
| int retval; |
| int i; |
| |
| del_timer_sync(&rocket_timer); |
| |
| retval = tty_unregister_driver(rocket_driver); |
| if (retval) |
| printk(KERN_INFO "Error %d while trying to unregister " |
| "rocketport driver\n", -retval); |
| put_tty_driver(rocket_driver); |
| |
| for (i = 0; i < MAX_RP_PORTS; i++) |
| kfree(rp_table[i]); |
| |
| for (i = 0; i < NUM_BOARDS; i++) { |
| if (rcktpt_io_addr[i] <= 0 || is_PCI[i]) |
| continue; |
| release_region(rcktpt_io_addr[i], 64); |
| } |
| if (controller) |
| release_region(controller, 4); |
| } |
| |
| /*************************************************************************** |
| Function: sInitController |
| Purpose: Initialization of controller global registers and controller |
| structure. |
| Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize, |
| IRQNum,Frequency,PeriodicOnly) |
| CONTROLLER_T *CtlP; Ptr to controller structure |
| int CtlNum; Controller number |
| ByteIO_t MudbacIO; Mudbac base I/O address. |
| ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. |
| This list must be in the order the AIOPs will be found on the |
| controller. Once an AIOP in the list is not found, it is |
| assumed that there are no more AIOPs on the controller. |
| int AiopIOListSize; Number of addresses in AiopIOList |
| int IRQNum; Interrupt Request number. Can be any of the following: |
| 0: Disable global interrupts |
| 3: IRQ 3 |
| 4: IRQ 4 |
| 5: IRQ 5 |
| 9: IRQ 9 |
| 10: IRQ 10 |
| 11: IRQ 11 |
| 12: IRQ 12 |
| 15: IRQ 15 |
| Byte_t Frequency: A flag identifying the frequency |
| of the periodic interrupt, can be any one of the following: |
| FREQ_DIS - periodic interrupt disabled |
| FREQ_137HZ - 137 Hertz |
| FREQ_69HZ - 69 Hertz |
| FREQ_34HZ - 34 Hertz |
| FREQ_17HZ - 17 Hertz |
| FREQ_9HZ - 9 Hertz |
| FREQ_4HZ - 4 Hertz |
| If IRQNum is set to 0 the Frequency parameter is |
| overidden, it is forced to a value of FREQ_DIS. |
| int PeriodicOnly: 1 if all interrupts except the periodic |
| interrupt are to be blocked. |
| 0 is both the periodic interrupt and |
| other channel interrupts are allowed. |
| If IRQNum is set to 0 the PeriodicOnly parameter is |
| overidden, it is forced to a value of 0. |
| Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller |
| initialization failed. |
| |
| Comments: |
| If periodic interrupts are to be disabled but AIOP interrupts |
| are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. |
| |
| If interrupts are to be completely disabled set IRQNum to 0. |
| |
| Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an |
| invalid combination. |
| |
| This function performs initialization of global interrupt modes, |
| but it does not actually enable global interrupts. To enable |
| and disable global interrupts use functions sEnGlobalInt() and |
| sDisGlobalInt(). Enabling of global interrupts is normally not |
| done until all other initializations are complete. |
| |
| Even if interrupts are globally enabled, they must also be |
| individually enabled for each channel that is to generate |
| interrupts. |
| |
| Warnings: No range checking on any of the parameters is done. |
| |
| No context switches are allowed while executing this function. |
| |
| After this function all AIOPs on the controller are disabled, |
| they can be enabled with sEnAiop(). |
| */ |
| static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, |
| ByteIO_t * AiopIOList, int AiopIOListSize, |
| int IRQNum, Byte_t Frequency, int PeriodicOnly) |
| { |
| int i; |
| ByteIO_t io; |
| int done; |
| |
| CtlP->AiopIntrBits = aiop_intr_bits; |
| CtlP->AltChanRingIndicator = 0; |
| CtlP->CtlNum = CtlNum; |
| CtlP->CtlID = CTLID_0001; /* controller release 1 */ |
| CtlP->BusType = isISA; |
| CtlP->MBaseIO = MudbacIO; |
| CtlP->MReg1IO = MudbacIO + 1; |
| CtlP->MReg2IO = MudbacIO + 2; |
| CtlP->MReg3IO = MudbacIO + 3; |
| #if 1 |
| CtlP->MReg2 = 0; /* interrupt disable */ |
| CtlP->MReg3 = 0; /* no periodic interrupts */ |
| #else |
| if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */ |
| CtlP->MReg2 = 0; /* interrupt disable */ |
| CtlP->MReg3 = 0; /* no periodic interrupts */ |
| } else { |
| CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */ |
| CtlP->MReg3 = Frequency; /* set frequency */ |
| if (PeriodicOnly) { /* periodic interrupt only */ |
| CtlP->MReg3 |= PERIODIC_ONLY; |
| } |
| } |
| #endif |
| sOutB(CtlP->MReg2IO, CtlP->MReg2); |
| sOutB(CtlP->MReg3IO, CtlP->MReg3); |
| sControllerEOI(CtlP); /* clear EOI if warm init */ |
| /* Init AIOPs */ |
| CtlP->NumAiop = 0; |
| for (i = done = 0; i < AiopIOListSize; i++) { |
| io = AiopIOList[i]; |
| CtlP->AiopIO[i] = (WordIO_t) io; |
| CtlP->AiopIntChanIO[i] = io + _INT_CHAN; |
| sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */ |
| sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */ |
| if (done) |
| continue; |
| sEnAiop(CtlP, i); /* enable the AIOP */ |
| CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ |
| if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ |
| done = 1; /* done looking for AIOPs */ |
| else { |
| CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ |
| sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ |
| sOutB(io + _INDX_DATA, sClockPrescale); |
| CtlP->NumAiop++; /* bump count of AIOPs */ |
| } |
| sDisAiop(CtlP, i); /* disable AIOP */ |
| } |
| |
| if (CtlP->NumAiop == 0) |
| return (-1); |
| else |
| return (CtlP->NumAiop); |
| } |
| |
| /*************************************************************************** |
| Function: sPCIInitController |
| Purpose: Initialization of controller global registers and controller |
| structure. |
| Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize, |
| IRQNum,Frequency,PeriodicOnly) |
| CONTROLLER_T *CtlP; Ptr to controller structure |
| int CtlNum; Controller number |
| ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. |
| This list must be in the order the AIOPs will be found on the |
| controller. Once an AIOP in the list is not found, it is |
| assumed that there are no more AIOPs on the controller. |
| int AiopIOListSize; Number of addresses in AiopIOList |
| int IRQNum; Interrupt Request number. Can be any of the following: |
| 0: Disable global interrupts |
| 3: IRQ 3 |
| 4: IRQ 4 |
| 5: IRQ 5 |
| 9: IRQ 9 |
| 10: IRQ 10 |
| 11: IRQ 11 |
| 12: IRQ 12 |
| 15: IRQ 15 |
| Byte_t Frequency: A flag identifying the frequency |
| of the periodic interrupt, can be any one of the following: |
| FREQ_DIS - periodic interrupt disabled |
| FREQ_137HZ - 137 Hertz |
| FREQ_69HZ - 69 Hertz |
| FREQ_34HZ - 34 Hertz |
| FREQ_17HZ - 17 Hertz |
| FREQ_9HZ - 9 Hertz |
| FREQ_4HZ - 4 Hertz |
| If IRQNum is set to 0 the Frequency parameter is |
| overidden, it is forced to a value of FREQ_DIS. |
| int PeriodicOnly: 1 if all interrupts except the periodic |
| interrupt are to be blocked. |
| 0 is both the periodic interrupt and |
| other channel interrupts are allowed. |
| If IRQNum is set to 0 the PeriodicOnly parameter is |
| overidden, it is forced to a value of 0. |
| Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller |
| initialization failed. |
| |
| Comments: |
| If periodic interrupts are to be disabled but AIOP interrupts |
| are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. |
| |
| If interrupts are to be completely disabled set IRQNum to 0. |
| |
| Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an |
| invalid combination. |
| |
| This function performs initialization of global interrupt modes, |
| but it does not actually enable global interrupts. To enable |
| and disable global interrupts use functions sEnGlobalInt() and |
| sDisGlobalInt(). Enabling of global interrupts is normally not |
| done until all other initializations are complete. |
| |
| Even if interrupts are globally enabled, they must also be |
| individually enabled for each channel that is to generate |
| interrupts. |
| |
| Warnings: No range checking on any of the parameters is done. |
| |
| No context switches are allowed while executing this function. |
| |
| After this function all AIOPs on the controller are disabled, |
| they can be enabled with sEnAiop(). |
| */ |
| static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, |
| ByteIO_t * AiopIOList, int AiopIOListSize, |
| WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, |
| int PeriodicOnly, int altChanRingIndicator, |
| int UPCIRingInd) |
| { |
| int i; |
| ByteIO_t io; |
| |
| CtlP->AltChanRingIndicator = altChanRingIndicator; |
| CtlP->UPCIRingInd = UPCIRingInd; |
| CtlP->CtlNum = CtlNum; |
| CtlP->CtlID = CTLID_0001; /* controller release 1 */ |
| CtlP->BusType = isPCI; /* controller release 1 */ |
| |
| if (ConfigIO) { |
| CtlP->isUPCI = 1; |
| CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL; |
| CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL; |
| CtlP->AiopIntrBits = upci_aiop_intr_bits; |
| } else { |
| CtlP->isUPCI = 0; |
| CtlP->PCIIO = |
| (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC); |
| CtlP->AiopIntrBits = aiop_intr_bits; |
| } |
| |
| sPCIControllerEOI(CtlP); /* clear EOI if warm init */ |
| /* Init AIOPs */ |
| CtlP->NumAiop = 0; |
| for (i = 0; i < AiopIOListSize; i++) { |
| io = AiopIOList[i]; |
| CtlP->AiopIO[i] = (WordIO_t) io; |
| CtlP->AiopIntChanIO[i] = io + _INT_CHAN; |
| |
| CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ |
| if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ |
| break; /* done looking for AIOPs */ |
| |
| CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ |
| sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ |
| sOutB(io + _INDX_DATA, sClockPrescale); |
| CtlP->NumAiop++; /* bump count of AIOPs */ |
| } |
| |
| if (CtlP->NumAiop == 0) |
| return (-1); |
| else |
| return (CtlP->NumAiop); |
| } |
| |
| /*************************************************************************** |
| Function: sReadAiopID |
| Purpose: Read the AIOP idenfication number directly from an AIOP. |
| Call: sReadAiopID(io) |
| ByteIO_t io: AIOP base I/O address |
| Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X |
| is replace by an identifying number. |
| Flag AIOPID_NULL if no valid AIOP is found |
| Warnings: No context switches are allowed while executing this function. |
| |
| */ |
| static int sReadAiopID(ByteIO_t io) |
| { |
| Byte_t AiopID; /* ID byte from AIOP */ |
| |
| sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */ |
| sOutB(io + _CMD_REG, 0x0); |
| AiopID = sInW(io + _CHN_STAT0) & 0x07; |
| if (AiopID == 0x06) |
| return (1); |
| else /* AIOP does not exist */ |
| return (-1); |
| } |
| |
| /*************************************************************************** |
| Function: sReadAiopNumChan |
| Purpose: Read the number of channels available in an AIOP directly from |
| an AIOP. |
| Call: sReadAiopNumChan(io) |
| WordIO_t io: AIOP base I/O address |
| Return: int: The number of channels available |
| Comments: The number of channels is determined by write/reads from identical |
| offsets within the SRAM address spaces for channels 0 and 4. |
| If the channel 4 space is mirrored to channel 0 it is a 4 channel |
| AIOP, otherwise it is an 8 channel. |
| Warnings: No context switches are allowed while executing this function. |
| */ |
| static int sReadAiopNumChan(WordIO_t io) |
| { |
| Word_t x; |
| static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 }; |
| |
| /* write to chan 0 SRAM */ |
| sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0])); |
| sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */ |
| x = sInW(io + _INDX_DATA); |
| sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */ |
| if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */ |
| return (8); |
| else |
| return (4); |
| } |
| |
| /*************************************************************************** |
| Function: sInitChan |
| Purpose: Initialization of a channel and channel structure |
| Call: sInitChan(CtlP,ChP,AiopNum,ChanNum) |
| CONTROLLER_T *CtlP; Ptr to controller structure |
| CHANNEL_T *ChP; Ptr to channel structure |
| int AiopNum; AIOP number within controller |
| int ChanNum; Channel number within AIOP |
| Return: int: 1 if initialization succeeded, 0 if it fails because channel |
| number exceeds number of channels available in AIOP. |
| Comments: This function must be called before a channel can be used. |
| Warnings: No range checking on any of the parameters is done. |
| |
| No context switches are allowed while executing this function. |
| */ |
| static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, |
| int ChanNum) |
| { |
| int i; |
| WordIO_t AiopIO; |
| WordIO_t ChIOOff; |
| Byte_t *ChR; |
| Word_t ChOff; |
| static Byte_t R[4]; |
| int brd9600; |
| |
| if (ChanNum >= CtlP->AiopNumChan[AiopNum]) |
| return 0; /* exceeds num chans in AIOP */ |
| |
| /* Channel, AIOP, and controller identifiers */ |
| ChP->CtlP = CtlP; |
| ChP->ChanID = CtlP->AiopID[AiopNum]; |
| ChP->AiopNum = AiopNum; |
| ChP->ChanNum = ChanNum; |
| |
| /* Global direct addresses */ |
| AiopIO = CtlP->AiopIO[AiopNum]; |
| ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG; |
| ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN; |
| ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK; |
| ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR; |
| ChP->IndexData = AiopIO + _INDX_DATA; |
| |
| /* Channel direct addresses */ |
| ChIOOff = AiopIO + ChP->ChanNum * 2; |
| ChP->TxRxData = ChIOOff + _TD0; |
| ChP->ChanStat = ChIOOff + _CHN_STAT0; |
| ChP->TxRxCount = ChIOOff + _FIFO_CNT0; |
| ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0; |
| |
| /* Initialize the channel from the RData array */ |
| for (i = 0; i < RDATASIZE; i += 4) { |
| R[0] = RData[i]; |
| R[1] = RData[i + 1] + 0x10 * ChanNum; |
| R[2] = RData[i + 2]; |
| R[3] = RData[i + 3]; |
| sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0])); |
| } |
| |
| ChR = ChP->R; |
| for (i = 0; i < RREGDATASIZE; i += 4) { |
| ChR[i] = RRegData[i]; |
| ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum; |
| ChR[i + 2] = RRegData[i + 2]; |
| ChR[i + 3] = RRegData[i + 3]; |
| } |
| |
| /* Indexed registers */ |
| ChOff = (Word_t) ChanNum *0x1000; |
| |
| if (sClockPrescale == 0x14) |
| brd9600 = 47; |
| else |
| brd9600 = 23; |
| |
| ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD); |
| ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8); |
| ChP->BaudDiv[2] = (Byte_t) brd9600; |
| ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8); |
| sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]); |
| |
| ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL); |
| ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8); |
|